50mm FSW - EDF

Hello all, I think it's been about 7 years since I've been here on rc groups. Been busy and kinda fell out of the hobby. So this is what I am building to get back into the air. A custom eye-balled FSW with a Dons RC Wemotec/5400kv/30 amp esc/ 3cell -800mahx 2ea in parallel. Should burn a whole in the sky, I hope. A little dodgy on how to figure out the CG though, any input would be greatly appreciated, anything to help me from burying this in the dirt in 5 seconds.

sorry

Blue man I can calculate your CG for you if you tell me the wing span, root, and tip measurements. Also accurate sweep measurement on main wing at leading edge. I prolly have more experience with SFW than a lot of fellows the past 11 yrs alone. I'll volunteer.